Results 11 to 20 of about 4,800,192 (240)

Assessing the vulnerability of marine sedimentary organic carbon : the influence of anthropogenic disturbance [PDF]

open access: yes, 2023
As anthropogenic carbon dioxide (CO₂) concentrations rise, there is an increasing need to re-evaluate our understanding of the complex interactions involved within the global carbon (C) cycle. C stored within marine sediments have previously been largely
Black, Kirsty Eleanor
core   +1 more source

Investigation of future low-carbon and zero-carbon fuels for marine engines from the view of thermal efficiency

open access: yesEnergy Reports, 2022
The use of low-carbon and zero-carbon alternative fuels on marine engine is the main measure to achieve carbon neutrality for shipping sector, thus attracting numerous research on fuel techno-economics, fuel safety and fuel production chains.
Long Liu, Yuanheng Tang, Dai Liu
doaj   +1 more source

MEDUSA-2.0: an intermediate complexity biogeochemical model of the marine carbon cycle for climate change and ocean acidification studies [PDF]

open access: yes, 2013
MEDUSA-1.0 (Model of Ecosystem Dynamics, nutrient Utilisation, Sequestration and Acidification) was developed as an "intermediate complexity" plankton ecosystem model to study the biogeochemical response, and especially that of the so-called "biological ...
E. E. Popova   +8 more
core   +2 more sources

Dissolved Organic Matter in the Global Ocean: A Primer

open access: yesGels, 2021
Marine dissolved organic matter (DOM) holds ~660 billion metric tons of carbon, making it one of Earth’s major carbon reservoirs that is exchangeable with the atmosphere on annual to millennial time scales.
Dennis A. Hansell, Mónica V. Orellana
doaj   +1 more source

Nitrogen removal in marine environments: recent findings and future research challenges [PDF]

open access: yes, 2005
Respiratory reduction of nitrate (denitrification) is recognized as the most important process converting biologically available (fixed) nitrogen to N2. In current N cycle models, a major proportion of global marine denitrification (50–70%) is assumed to
Bo Thamdrup   +25 more
core   +1 more source

National forest carbon harvesting and allocation dataset for the period 2003 to 2018 [PDF]

open access: yesEarth System Science Data
Forest harvesting is one of the anthropogenic activities that most significantly affect the carbon budget of forests. However, the absence of explicit spatial information on harvested carbon poses a huge challenge in assessing forest-harvesting impacts ...
D. Wang   +6 more
doaj   +1 more source

Strong carbon cycle feedbacks in a climate model with interactive CO2 and sulphate aerosols [PDF]

open access: yes, 2003
Carbon cycle feedbacks are a significant source of uncertainty in climate change projections, with the potential for strong positive feedbacks to accelerate the rate of anthropogenic global warming during the 21st century.
Woodage, M. J.   +3 more
core   +1 more source

An Effect-Based Method to Evaluate Spatio-Temporal Variations of Coastal Marine DOM Properties

open access: yesJournal of Marine Science and Engineering, 2023
Marine dissolved organic matter (DOM) is a key component of the global carbon cycle. While marine DOM properties are usually characterized by chemical approaches, an effort to integrate its variations in an ecological perspective is needed. Heterotrophic
Clara Dignan   +3 more
doaj   +1 more source

Seasonal Dynamics in Carbon Cycling of Marine Bacterioplankton Are Lifestyle Dependent

open access: yesFrontiers in Microbiology, 2022
Although free-living (FL) and particle-attached (PA) bacteria are recognized as ecologically distinct compartments of marine microbial food-webs, few, if any, studies have determined their dynamics in abundance, function (production, respiration and substrate utilization) and taxonomy over a yearly cycle.
Sandra Martínez-García   +12 more
openaire   +9 more sources

Remote sensing of young leaf photosynthetic capacity in tropical and subtropical evergreen broadleaved forests [PDF]

open access: yesEarth System Science Data
Determining the large-scale RuBisCO carboxylation maximum rate (Vc,max25) in relation to leaf age is essential for evaluating the photosynthetic capacity of canopy leaves in global forests.
X. Yang   +12 more
doaj   +1 more source

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